Answer:
The correct answer is D) The 2000 students selected represent a sample of the population of all currently enrolled students.
Explanation:
The population for this study is the entire group of interest, which is the population of all currently enrolled students in the university.
Option A represents the sample of students who were sent the questionnaire, not the population.
Option B represents the sample of students who responded to the questionnaire, not the population.
Option C represents a subset of the students who responded to the questionnaire and supported the new major, not the population.
Option D correctly identifies that the 2000 students who were selected represent a sample of the population of all currently enrolled students. However, this is not the entire population, but only a part of it.
Option E is not relevant to the question at hand and is too broad as it includes past alumni of the university as well.
Therefore, the correct answer is D) The 2000 students selected represent a sample of the population of all currently enrolled students.